Fig. 5

Association mapping for downy mildew severity using FarmCPU without principal components as covariates. a Manhattan plot. Red line shows the Bonferroni corrected threshold for p = 0.01 and orange line indicates a suggestive threshold (1/number of markers). Bar at the bottom indicates marker density. b QQ plot for the FarmCPU model with the 95% confidence interval (light blue); Red line draws the expected distribution of p-values